Bibliografi : hlm. 195-196
No Inv.: 139789-139790/P/Perp/14/2c
Bibliografi : hlm. 295 - 299
Bibliografi : hlm. 215-217
Judul asli : "The Electronic Office"
No Inv.: 118745-118747/P/Perp/09/3c
Bibliografi : hlm. 283 No Inv.: 135276/SM/Perp/13/1c
No Inv.: 136299/SM/Perp/13/1c
No Inv.: 139791,139792/P/Perp/14/2c